LU-15939 build: configure script changes system header and config files

Remove the SUBDIRS target from configure tests.
Since Linux kernel version 2.6.x we can use target M.

Lustre-change: https://review.whamcloud.com/47604
Lustre-commit: 9a013c0c217aae50fbeb3016dc7a389ff53bd347

Test-Parameters: trivial clientdistro=ubuntu2004
Test-Parameters: trivial clientdistro=el8.5

Change-Id: I8e59bdaf2d0e4e08a659e08f63a14472fba72eb2
Signed-off-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/47742
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/config/lustre-build-linux.m4 b/config/lustre-build-linux.m4
index e8122fe..ef5ee24 100644 (file)
--- a/config/lustre-build-linux.m4
+++ b/config/lustre-build-linux.m4
@@ -11,14 +11,9 @@ makerule="$PWD/build"
 AC_CACHE_CHECK([for external module build target], lb_cv_module_target,
 [
        lb_cv_module_target=""
-       MODULE_TARGET="SUBDIRS"
        rm -f build/conftest.i
-       LB_LINUX_TRY_MAKE([], [],
-               [$makerule LUSTRE_KERNEL_TEST=conftest.i],
-               [test -s build/conftest.i],
-               [lb_cv_module_target="SUBDIRS"],[
        MODULE_TARGET="M"
-       makerule="$PWD/build/"
+       makerule="$PWD/build"
        LB_LINUX_TRY_MAKE([], [],
                [$makerule LUSTRE_KERNEL_TEST=conftest.i],
                [test -s build/conftest.i],
@@ -36,7 +31,7 @@ AC_CACHE_CHECK([for external module build target], lb_cv_module_target,
                [test -s build/conftest.i],
                [lb_cv_module_target="M58"], [
                        AC_MSG_ERROR([kernel module make failed; check config.log for details])
-       ])])])])
+       ])])])
 ])
 AS_IF([test -z "$lb_cv_module_target"],
        [AC_MSG_ERROR([unknown external module build target])],